/*
 * Copyright 2020 The Android Open Source Project
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package android.support.wearable.complications

import android.os.Parcel
import android.os.Parcelable

/** Writes a [Parcelable] to a [Parcel] and reads it back, returning the result. */
@Suppress("UNCHECKED_CAST")
internal fun <T : Parcelable> T.roundTripParcelable(): T? {
    val parcel = Parcel.obtain()
    return try {
        parcel.writeValue(this)
        parcel.setDataPosition(0)
        parcel.readValue(this.javaClass.classLoader)
    } finally {
        parcel.recycle()
    }
        as T
}
